42126005 has 8 divisors (see below), whose sum is σ = 50817024. Its totient is φ = 33523600.

The previous prime is 42125999. The next prime is 42126013. The reversal of 42126005 is 50062124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42126005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21101 + ... + 23010.

It is an arithmetic number, because the mean of its divisors is an integer number (6352128).

Almost surely, 2^42126005 is an apocalyptic number.

It is an amenable number.

42126005 is a deficient number, since it is larger than the sum of its proper divisors (8691019).

42126005 is a wasteful number, since it uses less digits than its factorization.

42126005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44307.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42126005 is about 6490.4549147190. The cubic root of 42126005 is about 347.9499338949.

Adding to 42126005 its reverse (50062124), we get a palindrome (92188129).

The spelling of 42126005 in words is "forty-two million, one hundred twenty-six thousand, five".